 /*
  * Copyright (c) 2018  STMicroelectronics – All rights reserved
  * The STMicroelectronics corporate logo is a trademark of STMicroelectronics
  *
  * Redistribution and use in source and binary forms, with or without modification,
  * are permitted provided that the following conditions are met:
  *
  * - Redistributions of source code must retain the above copyright notice, this list of conditions
  * and the following disclaimer.
  *
  * - Redistributions in binary form must reproduce the above copyright notice, this list of
  * conditions and the following disclaimer in the documentation and/or other materials provided
  * with the distribution.
  *
  * - Neither the name nor trademarks of STMicroelectronics International N.V. nor any other
  * STMicroelectronics company nor the names of its contributors may be used to endorse or
  * promote products derived from this software without specific prior written permission.
  *
  * - All of the icons, pictures, logos and other images that are provided with the source code
  * in a directory whose title begins with st_images may only be used for internal purposes and
  * shall not be redistributed to any third party or modified in any way.
  *
  * - Any redistributions in binary form shall not include the capability to display any of the
  * icons, pictures, logos and other images that are provided with the source code in a directory
  * whose title begins with st_images.
  *
  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR
  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
  * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER
  * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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  * OF SUCH DAMAGE.
  */

import Foundation
import UIKit

class MQTTParametersViewController : UIViewController{
    
    @IBOutlet weak var userNameText: UITextField!
    @IBOutlet weak var passwordText: UITextField!
    @IBOutlet weak var addressText: UITextField!
    @IBOutlet weak var portText: UITextField!
    @IBOutlet weak var enableTls: UISwitch!
    
    private var config = MqttConfigStorageUtil.defaultInstance;
    
    override func viewDidLoad() {
        userNameText.delegate = self
        passwordText.delegate = self
        addressText.delegate = self
        portText.delegate = self
    }
    
    private func loadFromSettings(){
        if let user = config.userName{
            userNameText.text = user
        }
        
        if let password = config.password{
            passwordText.text = password
        }
        
        if let address = config.address {
            addressText.text = address
        }
        
        portText.text = String(config.port)
        enableTls.isOn = config.useTls
    }
    
    override func viewWillAppear(_ animated: Bool) {
        super.viewWillAppear(animated)
        loadFromSettings()
    }
   
    override func viewWillDisappear(_ animated: Bool) {
        super.viewWillDisappear(animated)
        storeSettings()
    }
    
    private func storeSettings(){
        config.password = passwordText.text
        config.userName = userNameText.text
        config.address = addressText.text
        config.useTls = enableTls.isOn
        if let port = UInt16(portText.text ?? ""){
            config.port = port
        }
    }
        
}

extension MQTTParametersViewController : UITextFieldDelegate{
    public func textFieldShouldReturn(_ textField: UITextField) -> Bool{
        textField.endEditing(true)
        return false
    }
}
